Who is considered a "sensitive group" for air quality?
Sensitive groups include people with heart or lung disease, older adults, children, pregnant women, and people who are active outdoors. Those with asthma, COPD, or cardiovascular disease are particularly vulnerable at this AQI level.
Should I avoid going outside at this AQI level?
Healthy adults can still go outside but should reduce prolonged or heavy outdoor exertion. Sensitive individuals should limit outdoor time and avoid strenuous activities. Short outdoor trips like walking to the car are fine for everyone.
What AQI range is "Unhealthy for Sensitive Groups"?
This category covers AQI values from 101 to 150. While the general public is less likely to be affected, members of sensitive groups may experience health effects and should take precautions.
How can I protect myself when AQI is 101-150?
Close windows and run air conditioning with recirculated air. Use a HEPA air purifier indoors. If you must go outside, reduce intensity and duration of activities. Wear an N95 mask if you are in a sensitive group.
How often do US cities reach this AQI level?
Most major US cities experience several days per year in this range, typically during summer heat waves, wildfire seasons, or temperature inversions. Cities in California, Texas, and the Midwest see it more frequently.